Initial project creation

.cargo/config.toml

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+[build]
+target = "xtensa-esp32s3-espidf"
+
+[target.'cfg(target_os = "espidf")']
+linker = "ldproxy"
+runner = "espflash flash --monitor"
+rustflags = [ "--cfg",  "espidf_time64"]
+
+[unstable]
+build-std = ["std", "panic_abort"]
+
+[env]
+MCU = "esp32s3"
+ESP_IDF_VERSION = "v5.3.4"
+ESP_IDF_TOOLS_INSTALL_DIR = "global"
+
+# Uncomment this if you have moved the target dir by setting CARGO_TARGET_DIR or similar.
+# Required for now due to embuild limitations.
+#CARGO_WORKSPACE_DIR = { value = "", relative = true }

.gitignore

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+/.vscode
+/.embuild
+/target
+/Cargo.lock

Cargo.toml

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+[package]
+name = "esp32s3_remote_i2c_lcd"
+version = "0.1.0"
+authors = ["Wyatt Marchand <netwxxt@gmail.com>"]
+edition = "2021"
+resolver = "2"
+rust-version = "1.82"
+
+[[bin]]
+name = "esp32s3_remote_i2c_lcd"
+harness = false # do not use the built-in cargo test harness -> resolve rust-analyzer errors
+
+[profile.release]
+opt-level = "s"
+
+[profile.dev]
+debug = true    # Symbols are nice, and they don't increase the size on Flash
+opt-level = "z"
+
+[dependencies]
+esp-idf-svc = { version = "0.51", features = ["std"] }
+anyhow = "1"
+log = "0.4"
+
+[build-dependencies]
+embuild = "0.33"

build.rs

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+fn main() {
+    embuild::espidf::sysenv::output();
+}

rust-toolchain.toml

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+[toolchain]
+channel = "esp"

sdkconfig.defaults

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+# Increase a bit these stack sizes as they are also a bit too small by default
+CONFIG_ESP_SYSTEM_EVENT_TASK_STACK_SIZE=4096
+CONFIG_FREERTOS_IDLE_TASK_STACKSIZE=4096
+
+# You might have to increase this further if you spawn your own Rust threads 
+# that allocate large stack variables; or better yet - use 
+# `std::thread::Builder::new().stack_size(XXX)` for spawning
+CONFIG_PTHREAD_TASK_STACK_SIZE_DEFAULT=4096
+
+CONFIG_ETH_SPI_ETHERNET_W5500=y
+CONFIG_ESP_MAIN_TASK_STACK_SIZE=8000
+CONFIG_HTTPD_MAX_REQ_HDR_LEN=1024

src/main.rs

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+fn main() {
+    // It is necessary to call this function once. Otherwise, some patches to the runtime
+    // implemented by esp-idf-sys might not link properly. See https://github.com/esp-rs/esp-idf-template/issues/71
+    esp_idf_svc::sys::link_patches();
+
+    // Bind the log crate to the ESP Logging facilities
+    esp_idf_svc::log::EspLogger::initialize_default();
+
+    log::info!("Hello, world!");
+}